Edwin cecil bolls



(No Model.)

E. G. ROLLS.

NUT LOCK. N0. 392,070; Patented Oct. 30, 1888. i v

Wiineaaw llhuiTnn STATES PATENT Tricia NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 392,070, dated October 30, 1888.

Application filed June 10,1887. Serial No. 240,957.

(No model.) Patented in England July 19,1887, No. 10,098; in Canada Angustlfi, 1887, No. 27,447; in Belgium November 15, 1887, No. 79,330; in Italy December 22, 1887, No. 22,552; in France January 19, 1888, No. 186,564, and in Austria-Hungary To all whom it may concern:

Be it known that I, EDWIN CEoIL RoLLs, broker, of the town of Chatham, in the county ofKent and Province of Ontario,0anada, have invented a new and useful Device for Looking Threaded Nuts to Threaded Bolts, (patented in England July 19, 1887, No. 10,098; in Canada, August 16, 1887', No. 27,447; in Belgium November 15, 1887, No. 79,330; in Italy December 22, 1887, N 0. 22,552; in France January 19, 1888, No. 186,564, and in Austria-Hungary March 23, 1888, N 0. 45,998 and No. 6,482,) of which the following is a specification.

Heretofore in that class of nut-locks including as elements a base or washer plate and a pivoted dog or retainingplate adapted to bear against the nut to prevent turning, objections have existed because of the lack of adjustment provided in their construction, and while in one form of lock suggested the base or washer plate was bifurcated, so as to allow it to be slipped into place easily without accurately registering with the end of the bolt, the device was not adapted to rails of different width or differing relatively as to the position of the bolt from the bottom or flange of the rail, as in this construction a spring locking-dog was used to engage only the corner of the bolt, and any material difference in the position of the bolt from that for which the lock was made would carry the retaining-edge of the springdog out of line with the nut, and thus render it useless, or prevent the Washer-plate from bearing against the lower flange, and thus leave it without support. Again, such look ing devices have been constructed consisting of washer-plates provided with simply a bolthole and side holding-strips adapted to fold down upon either side of the nut, but no ad- 0 justment at all is permitted in such construe tions, and the plate will only be supported on the lower flange of the rail when the bolt-hole is accurately made therein at a point equal to the distance between the bearing-flange and the bolt-hole in the fish-plate.

It is the object of my invention to obviate the difficulties above enumerated by providing a washer or a base-plate having an elongated slot for the passage of the bolt, whereby the said bolt may be used on rails difiering as to the height of the bolt-hole from the rail flange or bottom without change, and in combining bearing against the flange of the rail.

March 23, 1888, No. 45.998 and l\'o.o,4e2.

with such a slotted base-plate locking or holdingstrips extending parallel to the line of the slot and adapted to fold down upon each side of the nut, and of such a length as to allow of the use of the lock on rails without regard to the position of the bolthole from the point ofsupport.

To this end my invention consists of a baseplate fitted to a bolt loosely by means of an elongated slot and a side strip or strips extending parallel to the slotin the plate and adapted to hold the nut from turning whatever the position of the washer or base plate.

In the accompanying drawings, Figure 1 is a cross-section of a rail with my improved device. Fig. 2 is a side elevation. .Fig. 3 is a modification. Figs. 4 and 5 are details of the locking parts. Fig. 6 is a detail view of the chamfered nut shown in Fig. 2.

In the drawings the rail is shown at A and its flange at a. B B are the ordinary fishplates, and G is the bolt, preferably squared near the head to hold it from turning in the fish-plate when the nut is applied. Beneath the nut is a washer or base plate, E, bearing against the fish plate, with its bottom edge It is provided with an elongated slot, 0, cut of a width to allow the bolt to pass through without binding, but at the same time to prevent all lateral displacement under thelateral strain put upon the nut to tighten it. This is of importance, as will be hereinafter explained, as the plate is kept in proper relative position to the nut. This elongated slot allows movement of the plate vertically of the bolt, so that no matter what may be the distance of the bolt from the flange the edge of the plate may be fitted to it and still rest upon the said flange; or, in case it should not rest upon it when applied, as the plate is practically loosely fitted, the jarring caused by the passage oftrains will soon shake it down until it rests properly upon the flange. In order to allow for the difference in rails and the position of the bolt-holes, it is necessary that there shall be combined with this baseplate or washer a locking or holding means capable of retaining the nut against turning without regard to the relative position of the nut and washer as to height, and I therefore provide a locking strip or strips, E, pivupper end of the baseoted or hinged to the plate and extending down parallel to the elongated slot in the base-plate, with a space between them (if two be used) adapted to permit them to be folded down upon each side of the nut, and as they bear against the sides of the nut they prevent it from turning. Their length permits them to hold the nut whether the nut be near the bottom or near the top of the rail; and by reason of the width of the slot in the plate E preventing lateral movement of the plate on the bolt when the nut is turned square it will be found that the locking strip or strips will be in such position as to clear the side of the nut and to fold down, so as to hold it in place.

If desired, I may use chamfered nuts for greater protection, as shown in Figs. 2 and 6. In Fig. 3, instead of the lower edge of the base-plate bearing on the flange of the rail, I have shown it employed on a fiangeless rail with a turned-in portion, 6 which serves the same purpose, the slot allowing the lock to be attached to rails varying in the distance between the bottom and the position of the bolts.

I claim 1. 'Anut-look consisting of a base-plate loosely fitted to a boltlby means of a verticallyelongated slot and a locking strip pivoted thereto and extending down along the side of the nut parallel to the slot in said plate,whereby the said lock is adapted to varying positions of bolts, substantially as described.

2. A nut-lock consisting of a base-plate loosely fitted to a bolt, a vertically-elongated slot in said plate of a width only slightly in excess of the bolt,whereby lateral displacement is prevented, and elongated looking-strips pivoted to the base-plate and extending parallel to the slot in the base-plate, substantially as described.

3. A nut-lock consisting of the base-plate E, having the vertically-elongated slot, and elongated locking -strips hinged thereto and extending parallel to said slot, and a flange, e

adapted to prevent the baseplate from turn- 5 ing, substantially as described.

EDWIN CECIL ROLLS. Witnesses:

BENJAMIN J. SANDYS, ARTHUR M. RoLLs. 

